216167216617 has 16 divisors (see below), whose sum is σ = 242045314560. Its totient is φ = 191345718400.

The previous prime is 216167216597. The next prime is 216167216641. The reversal of 216167216617 is 716612761612.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216167216617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216167216647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241273 + ... + 700390.

It is an arithmetic number, because the mean of its divisors is an integer number (15127832160).

Almost surely, 2^216167216617 is an apocalyptic number.

It is an amenable number.

216167216617 is a deficient number, since it is larger than the sum of its proper divisors (25878097943).

216167216617 is a wasteful number, since it uses less digits than its factorization.

216167216617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942224.

The product of its digits is 254016, while the sum is 46.

The spelling of 216167216617 in words is "two hundred sixteen billion, one hundred sixty-seven million, two hundred sixteen thousand, six hundred seventeen".